Type-writing machine.



TYPE WRITING MACHINE.

APPLIoATIoN FILED MAE.5.1904.

2 SHEETS-SHEET 2.

MTNEEEEE:

IINITED STATES ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

TYPE-WRITING. MACHINE.

Specification of Letters Patent.

Patented Sept. 19, 1905. l

Application sied March 5,1904. sarai No. 196,648.

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Beit known that I, ALEXANDER T. BROWN, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type-VVriting Machines, of which the following is a specification.

My invention relates more particularly to type-bars and hangers for writing-machines, and has for its main objects the provisionof means for guiding and steadying the type-bar at the printing moment and the construction of the type-bar and the hanger and their mounting.

To these main ends the invention consists in the various features of construction and combinations and arrangements of parts hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a rear elevation, partly in section, of suflicient of a type-writing machine to show my invention and embodying the latter. Fig. 2 is a central vertical longitudinal section of such a machine. Fig. 3 is an enlarged horizontal section on the line .fr a: of Fig. 2 and looking in the direction of the arrow at said line.

In the several views the same part will be found designated by the same numeral of reference.

1 designates the base of the machine, 2 the top plate, supported on posts 3, rising from the base, and 4 the platen, which is shown only diagrammatically.

. The key-levers within the base of the machine may be pivoted at their rear ends, as at 6, and may be furnished with the usual restoring-springs 7. In the present instance a bell-crank 8 is pivoted at 9 directly to a key-lever 5, and the lower slotted end l0 of said bell-crank engages a transverse fulcrumrod 11, as in prior machines. The upper end of the bell-crank is pivoted at 12 to the rear end of a connecting-link 13, and its forward end is pivoted at 14 to an ear on the upper edge of a type-bar 15, which in this case is shown as provided with two types--one upper and one lower case. The type-bar may be provided with a returning-spring 15a. The type-bar is pivoted at 16 to or in a hanger 17, which is Xed by a screw 18 to a segment or support 19, which is vertically arranged in the usual manner of front-strike machines and which may either be secured to the framework at its opposite ends, as by screws 20,

or may be arranged to shift up and down for the change of case. In the present instance, for convenience solely, the segment is shown as fixed, and by the dotted lines in Fig. 2 the platen is shown as shiftable for upper-case printing'. The rear end of the type-bar is formed or provided with an extension, arm, or tailpiece 21, which normally when the typebar is at rest against its supporting-pad 22 projects rearwardly and substantially in the The hanger is preferably made of one solid piece of metal with its upper end forked at 17 to receive the hub end or pivotal portion 26 of the type-bar, although, as is common in this art, the hanger may be made plain and the type-bar bifurcated to straddle the hanger. The type-bar is drilled and likewise the cheekplates of the hanger for the passage through the coinciding holes of the rivet or pivot-pin 16, which may be headed at its opposite ends. The type-bar and hanger are so connected together that the former shall have a close lit but yet be freely acting. 'With sucha joint there is a liability of the types printing out of alinement, and hence the provision of the arm 21 and its cooperating guide, notch, or jaws. In action when a key-lever is depressed the upper end of the bell-crank is swung rearwardly, and through the action of the connecting-link 13 the type-bar is pulled upwardly and rearwardly about the pivot 16. During this movement the arm 21 swings downwardly and forwardly, and its outer eX- tremity at near the end of the printing stroke passes through the flaring mouth 24 and then in between the parallel jaws of the guiding device and is there situated at the time the type strikes the paper on the platen.

While I prefer to have the cross-section of the arm 21 parallel-sided and to provide in the guiding portion of the hanger parallel-sided jaws, nevertheless the latter may be dispensed with and the cross-section of the arm may be dilferently shaped, it being only necessary that the arm and the guiding device coper- IOO IOS

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ate to steady and direct or guide the bar at the time of printing.

Preferably the arm 21 is made of appreciable length, and the guiding device is located at a corresponding distance from theW pivotal point of the type-bar, so as to produce, in effect, a wide support or bearing for the type-bar when the impression is made. It will be observed that the distance from the pivot 16 of the type-bar to the guiding device is in this instance about one-third the length of the type-bar proper, and when the free end of the arm cooperates with the said guiding i device the type-bar is caused to print true or in alinement. While I have referred to the different proportions, of course. it will be understood that they are in no wise essential. It will also be understood that by the employment of the guiding device described the typebars will print in alinement. The use of the arm 21 does not add perceptibly to the touch of the type-bar action, since it is located on the opposite side of the pivot from the typebar proper, and hence has a counterbalancing or upwardly-lifting tendency thereon.

The type-bar hanger is preferably secured to the segment or support between the typebar pivot and the alining or guiding device, and for this purpose the said hanger is formed at about its middle with a perforation or hole 27 for the passage therethrough of the retaining-screw 18; The hangers are made as narrow as possible, so as to take up little room on the segment; but at the perforated portions these hangers are made slightly wider than the body portion in order to obtain as large a hole as possible and the use of a goodsized securing-screw, the head of which bears upon the metal surrounding the said hole when the hangers are in position. The widened portions of adjacent hangers are arranged to alternate or are staggered, as indicated in Fig. l, the segment being drilled with two parallel curved series of holes 28 for the hanger-screws, the said holes being threaded to receive the threaded ends of said screws.

The hangers are constructed so as to be radially adjustable to facilitate the alinement of the type-bars after the assembling thereof. To this end the holes 27 in said hangers are made elongated, and this will enable the hangers, with their integral guides, to be moved slightly transversely of the segment on lines radiating to the printing-point and then secured by the set-screws 18 after the type-bars have been properly adjusted.

While I have described particularlya single hanger, type-bar, and its associated guide,it will be understood that a full system of radially-arranged type-bars and hangers are provided and that each hanger is provided with a guide for cooperation with the arm 21 o n its associated ty pe-bar and that said guides are each located in the same radial plane that the type-.bar swings in and outside the segmental line formed by the pivots of the typebars and in the rear of the segment. It will also be seen that the guiding member or extension 21 moves in an opposite direction from its associated bar as the barapproaches the printing position; that the type-bar proper and the extension 21 may be regarded asatype-bar pivoted intermediate of its ends and carrying a. type or types on one end and a guiding member at the other end, and which is brought into coperation with its associated guiding means just before the bar reaches the printing position, so that the bar is free from any retarding efect of the guiding means except possibly at the last portion of the stroke of the bar, when it has acquired its greatest speed. It will likewise be observed that in the normal position of each type-bar the bar itself extends to the front of the segment 19, whereas the arm 21 extends to the rear of the segment, and that said arm moves downwardly into cooperation with its associated guide as the body of the bar moves upwardly to the printing-point.

Various changes may be made without departing from the spirit of my invention, and in place of the typebar-actuating devices shown any other suitable actuating' means may be employed.

I/VhatIclaim as new, and desire to secure by Letters Patent, is-

1. In a front-strike type-writing machine, the combination of a substantially vertical segment, a hanger secured to the rear side of said segment, an upwardly and rearwardly swinging type-bar pivoted to said hanger and having a rearwardly-extending tailpiece substantially in line with the type-bar, and a forked guide at the rear of said segment.

2. In a front-strike type-writing machine, the combination of a substantially vertical segment, an upwardly and rearwardly swinging type-bar that is pivoted in the rear side of said segment and has a tailpiece that extends rearwardly from said type-barsubstantially in line therewith, a link that extends above the tailpiece and is connected to the type-bar for actuating it, and a forked guide that cooperates with said tailpiece at and near the last portion of the printing stroke of the type-bar. Y

3. In a front-strike type-writing machine, the combination of a substantially vertical segment, an adjustable hanger, an upwardly and`rearwardl y swinging type-bar that is pivoted to said hanger in the rear of the segment and has Aa tailpiece that extends rearwardly from said type-bar substantially in line therewith, a link that extends above the tailpiece and is connected to the type-bar for actuating it, and a forked guide carried by and adjustable with the hanger and which coperates with said tailpiece at vand near the last portion of the printing stroke of the type-bar.

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IO hanger and with which the tailpieee on the associated type-bar is adapted to coperate at and near the last portion of the printingstroke of the type-bar.

Signed at Syracuse,l in the county of Onondaga and State of New York, this lst day of I5 March, A. D. 1904.

ALEXANDER T. BROWN. Witnesses:

CHARLES E. ToMLrNsoN, E. E. CORY. 

